<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
	<title>Document</title>
	<style type="text/css">
		
		.box{
			width: 600px;
			height: 600px;
			background: #00C3F5;
			padding-top: 25px;
		}

		#text{
			width: 550px;
			height: 350px;
			margin-left: 25px;
			background: #FFF;
		}

		#input{
			width: 550px;
			height: 200px;
			margin-top: 20px;
			margin-left: 25px;
			background: #FFF;
		}
		#btn{
			margin-left: 537px;
			margin-top: 0px;
		}
	</style>

	<script type="text/javascript">

		var text = document.getElementById('text')
		var input = document.getElementById('input')
		var btn = document.getElementById('btn')

		btn.onclick = function(){
			
		}
	</script>
</head>
<body>
	<div class="box">
		<div id="text"></div>
		<textarea name="" id="input" id="" cols="30" rows="10"></textarea>
		<input type="button" id="btn" value="发送">
	</div>
</body>
</html>